package shili;


import org.apache.log4j.Logger;

// 示例6(3)
public class IntermediaryImpl implements Buyer{
    private Logger logger = Logger.getLogger(IntermediaryImpl.class);
    /**
     * 被代理的目标对象
     * @return
     */
    private Buyer target;

    public IntermediaryImpl(Buyer target){
        this.target = target;
    }

    /**
     * 对目标对象业务进行代理
     * @return
     */
    @Override
    public String havealook() {
        before();
        String feedback = target.havealook();   // 执行目标对象的实际业务
        after();
        return "看房记录: 买家反馈“"+ feedback +"“";
    }
    public void before(){
        logger.debug("前期准备.");
        logger.debug("查找房源.");
        logger.debug("和卖家沟通时间.");
    }
    public void after(){
        logger.debug("后期跟踪.");
        logger.debug("和买家共同意见.");
    }
}
